Patent · US Active

Helmet

US10492557B2 · kind B2 · utility

5Cited by
5References
30Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 28, 2017
Grant dateDec 3, 2019
Priority date
Expiry dateFeb 28, 2037

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA42B3/064
  • WIPO fieldOther consumer goods
  • WIPO sectorOther fields

Abstract

A helmet with two layers configured to slide with respect to each other is provided. The surface of one or both layers contains a sliding facilitator to improve slidability between the two layers. The sliding facilitator may be any one or a combination of (i) an organic polymer, a polysiloxane and a surfactant; (ii) an organic polymer and a copolymer based on a polysiloxane and an organic polymer; or (iii) a non-elastomeric cross-linked polymer obtained or obtainable by subjecting a polysiloxane and an organic polymer to a cross-linking reaction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.